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Sure Flow Butterfly Valves Specifications and Applications Butterfly Valves make an excellent choice by combining the balance of an economical valve with the performance you expect in a Commercial, HVAC and an industrial butterfly valve. Specifications:All valves shall meet API-609 MSS-SP-67 ISO 5272 face-to-face dimensions. Valve sizes from 2" to 12" are rated at 200 psig WOG service and valve sizes from 14" to 30" are rated at 150 psig WOG service. All valves are full rated on dead-end service. All bodies shall be ductile iron 65-45-12 and bi-directional tested in both directions and be bubble tight with zero leakage. Lug bodies shall be full lug rated and all bodies shall be suitable for ANSI 125/150 lb, JIS, DIN or B.S. Flanges. Secondary seals shall be self-adjusting. All elastomers, all internal bearings shall be non-corrosive and non-metallic. All seats shall be suitable for 250°F sustained high temperature and capable of 2000 PPM on chlorinated applications. Testing:All valves are factory tested on both sides for bi-directional installations to zero leakage and bubble tight.
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